If you wanna back up your VMs, well, @hanccocka has listed pretty much all your options. Veeam is my VM backup software of choice. It is the best out there, as well as simplistic to setup & use, and cost is about $500US per CPU socket (yes, it is licensed per host socket you use, like vSphere). StorageCraft & Acronis and comparable in both function & cost and they would be your 'next in line' contenders to Veeam.